From 42456439a980e2f0570541855e8213cf3d886d82 Mon Sep 17 00:00:00 2001
From: "D. Berge" <dberge@aaltronav.eu>
Date: Fri, 29 Sep 2023 15:54:58 +0200
Subject: [PATCH] Remove ad-hoc notifier

---
 lib/www/server/ws/db.js | 71 -----------------------------------------
 1 file changed, 71 deletions(-)
 delete mode 100644 lib/www/server/ws/db.js

diff --git a/lib/www/server/ws/db.js b/lib/www/server/ws/db.js
deleted file mode 100644
index 053ee17..0000000
--- a/lib/www/server/ws/db.js
+++ /dev/null
@@ -1,71 +0,0 @@
-const { pool } = require('../lib/db/connection');
-
-var client;
-
-const channels = {};
-
-async function notify (data) {
-
-	if (data.channel in channels) {
-		data._received = new Date();
-		try {
-			const json = JSON.parse(data.payload);
-			data.payload = json;
-		} catch {
-			// Ignore the error
-		}
-		for (const listener of channels[data.channel]) {
-			await listener(JSON.parse(JSON.stringify(data)));
-		}
-	}
-}
-
-function reconnect () {
-	console.log("Reconnecting");
-	// No need to provide parameters, channels should already be populated.
-	listen();
-}
-
-async function listen (addChannels, callback) {
-	if (!client) {
-		try {
-			client = await pool.connect();
-		} catch (err) {
-			console.error("Error connecting to DB", err);
-			console.log("Will try again in 15 seconds");
-			setImmediate(() => client = null);
-			setTimeout(() => {
-				listen(addChannels, callback);
-			}, 15000);
-			return;
-		}
-		client.on('notification', notify);
-		console.log("Websocket client connected", Object.keys(channels));
-		client.on('error', (err) => console.error("Events client error: ", err));
-		client.on('end', () => {
-			console.warn("Websocket events client disconnected. Will attempt to reconnect in five seconds");
-			setImmediate(() => client = null);
-			setTimeout(reconnect, 5000);
-		});
-	}
-
-	if (addChannels) {
-		if (!Array.isArray(addChannels)) {
-			addChannels = [addChannels];
-		}
-
-		for (const channel of addChannels) {
-			if (!(channel in channels)) {
-				await client.query("LISTEN "+channel);
-				channels[channel] = [];
-				console.log("Listening to ", channel);
-			}
-
-			channels[channel].push(callback);
-		}
-	}
-}
-
-module.exports = {
-	listen
-}